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Finding the Fourth Proportional to 251,529.78, 347,008.65 and 142,611.15

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Solution

The fourth proportional to 251,529.78, 347,008.65 and 142,611.15 is: 196,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,529.78 : 347,008.65 = 142,611.15 : x
  2. Step 2: Convert to fraction form
    251,529.78/347,008.65 = 142,611.15/x
  3. Step 3: Cross multiply
    251,529.78x = 347,008.65 × 142,611.15
  4. Step 4: Simplify right side
    251,529.78x = 49,487,302,636.45
  5. Step 5: Solve for x
    x = 49,487,302,636.45/251,529.78
  6. Step 6: Final answer
    x = 196,745.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.